Kenny Levinsen
4 years ago
committed by
Simon Ser
parent
9feeb2738d
commit
bad1e9afa8
@ -0,0 +1,190 @@
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#define _POSIX_C_SOURCE 200809L
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#include <assert.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <wayland-server-core.h>
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#include <wlr/backend/session/interface.h>
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#include <wlr/config.h>
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#include <wlr/util/log.h>
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#include "backend/session/session.h"
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#include "util/signal.h"
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#include <libseat.h>
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const struct session_impl session_libseat;
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struct libseat_device {
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struct wl_list link;
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int fd;
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int device_id;
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};
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struct libseat_session {
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struct wlr_session base;
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struct libseat *seat;
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struct wl_event_source *event;
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struct wl_list devices;
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};
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static void handle_enable_seat(struct libseat *seat, void *data) {
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struct libseat_session *session = data;
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session->base.active = true;
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wlr_signal_emit_safe(&session->base.session_signal, session);
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}
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static void handle_disable_seat(struct libseat *seat, void *data) {
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struct libseat_session *session = data;
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session->base.active = false;
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wlr_signal_emit_safe(&session->base.session_signal, session);
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libseat_disable_seat(session->seat);
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}
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static int libseat_event(int fd, uint32_t mask, void *data) {
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struct libseat *seat = data;
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libseat_dispatch(seat, 0);
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return 1;
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}
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static struct libseat_seat_listener seat_listener = {
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.enable_seat = handle_enable_seat,
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.disable_seat = handle_disable_seat,
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};
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static struct libseat_session *libseat_session_from_session(
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struct wlr_session *base) {
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assert(base->impl == &session_libseat);
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return (struct libseat_session *)base;
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}
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static struct wlr_session *libseat_session_create(struct wl_display *disp) {
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struct libseat_session *session = calloc(1, sizeof(*session));
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if (!session) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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return NULL;
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}
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session_init(&session->base);
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wl_list_init(&session->devices);
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session->seat = libseat_open_seat(&seat_listener, session);
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if (session->seat == NULL) {
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wlr_log_errno(WLR_ERROR, "Unable to create seat");
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goto error;
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}
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const char *seat_name = libseat_seat_name(session->seat);
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if (seat_name == NULL) {
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wlr_log_errno(WLR_ERROR, "Unable to get seat info");
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goto error;
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}
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snprintf(session->base.seat, sizeof(session->base.seat), "%s", seat_name);
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struct wl_event_loop *event_loop = wl_display_get_event_loop(disp);
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session->event = wl_event_loop_add_fd(event_loop, libseat_get_fd(session->seat),
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WL_EVENT_READABLE, libseat_event, session->seat);
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if (session->event == NULL) {
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wlr_log(WLR_ERROR, "Failed to create libseat event source");
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goto error;
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}
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// We may have received enable_seat immediately after the open_seat result,
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// so, dispatch once without timeout to speed up activation.
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if (libseat_dispatch(session->seat, 0) == -1) {
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wlr_log_errno(WLR_ERROR, "libseat dispatch failed");
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goto error;
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}
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wlr_log(WLR_INFO, "Successfully loaded libseat session");
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session->base.impl = &session_libseat;
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return &session->base;
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error:
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if (session->seat != NULL) {
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libseat_close_seat(session->seat);
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}
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if (session->event != NULL) {
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wl_event_source_remove(session->event);
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}
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free(session);
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return NULL;
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}
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static void libseat_session_destroy(struct wlr_session *base) {
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struct libseat_session *session = libseat_session_from_session(base);
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libseat_close_seat(session->seat);
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wl_event_source_remove(session->event);
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free(session);
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}
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static struct libseat_device *find_device_by_fd(struct libseat_session *session, int fd) {
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struct libseat_device *dev;
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wl_list_for_each(dev, &session->devices, link) {
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if (dev->fd == fd) {
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return dev;
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}
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}
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return NULL;
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}
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static int libseat_session_open_device(struct wlr_session *base, const char *path) {
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struct libseat_session *session = libseat_session_from_session(base);
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int fd;
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int device_id = libseat_open_device(session->seat, path, &fd);
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if (device_id == -1) {
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wlr_log_errno(WLR_ERROR, "Failed to open device '%s'", path);
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return -1;
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}
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struct libseat_device *dev = calloc(1, sizeof(struct libseat_device));
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if (dev == NULL) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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libseat_close_device(session->seat, device_id);
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return -1;
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}
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dev->fd = fd;
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dev->device_id = device_id;
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wl_list_insert(&session->devices, &dev->link);
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return fd;
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}
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static void libseat_session_close_device(struct wlr_session *base, int fd) {
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struct libseat_session *session = libseat_session_from_session(base);
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struct libseat_device *dev = find_device_by_fd(session, fd);
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if (dev == NULL) {
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wlr_log(WLR_ERROR, "No device with fd %d found", fd);
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close(fd);
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return;
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}
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if (libseat_close_device(session->seat, dev->device_id) == -1) {
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wlr_log_errno(WLR_ERROR, "Failed to close device %d", dev->device_id);
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}
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wl_list_remove(&dev->link);
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free(dev);
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close(fd);
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}
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static bool libseat_change_vt(struct wlr_session *base, unsigned vt) {
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struct libseat_session *session = libseat_session_from_session(base);
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return libseat_switch_session(session->seat, vt);
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}
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const struct session_impl session_libseat = {
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.create = libseat_session_create,
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.destroy = libseat_session_destroy,
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.open = libseat_session_open_device,
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.close = libseat_session_close_device,
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.change_vt = libseat_change_vt,
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};
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@ -0,0 +1,8 @@
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#ifndef BACKEND_SESSION_SESSION_H
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#define BACKEND_SESSION_SESSION_H
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struct wlr_session;
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void session_init(struct wlr_session *session);
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#endif
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